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Finding the Fourth Proportional to 57,763.44, 79,779.36 and 38,867.76

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Solution

The fourth proportional to 57,763.44, 79,779.36 and 38,867.76 is: 53,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,763.44 : 79,779.36 = 38,867.76 : x
  2. Step 2: Convert to fraction form
    57,763.44/79,779.36 = 38,867.76/x
  3. Step 3: Cross multiply
    57,763.44x = 79,779.36 × 38,867.76
  4. Step 4: Simplify right side
    57,763.44x = 3,100,845,017.43
  5. Step 5: Solve for x
    x = 3,100,845,017.43/57,763.44
  6. Step 6: Final answer
    x = 53,681.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.